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Round|Natural|GIA

3.12ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 2484226945

Certificate GIA 2484226945

Diamond specifications and retailer prices

From $35,466 AUD
$24,855 USD
As of November 1, 2026
Save $28,178 AUD (44%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $63,643 AUD at MOH London · As of November 2, 2026
View at MOH London

About this 3.12ct natural round diamond

This 3.12ct natural round sits in the three to five carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2484226945. Listed at 7 retailers as of November 1, 2026, with prices from $35,466 to $63,643, a $28,178 spread on the same certified stone. MOH London lists it at $63,643. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

3.12
Carat
J
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 2484226945
Dimensions9.37 × 9.36 × 5.76 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
9.37 mm9.36 mm3.12 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2484226945
Side View
Table 60.0%Crown 35.5°Girdle: ThickPavilion 41.2°Culet: NoneDepth 61.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $63,643 AUD|Low: $35,466 AUD|High: $64,412 AUD|Avg: $48,127 AUD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
November 3, 2026
Retailer 4$35,466 AUD
Retailer 2$40,792 AUD
Retailer 3$46,693 AUD
MOH London$63,643 AUD

40 data points across 4 retailers

7 retailers$35,466 AUD to $63,643 AUD

B+
Cheapest Retailer
-
$35,466 AUD
$24,855 USD
B+
Retailer 2
-
$38,392 AUD
CA$37,369 CAD
View
B+
Retailer 3
-
$40,792 AUD
£22,510 GBP
View
B
Retailer 4
-
$44,725 AUD
$31,344 USD
View
B
Retailer 5
-
$46,693 AUD
€31,165 EUR
View
B
Retailer 6
-
$47,607 AUD
$33,364 USD
View
Most Expensive
B
MOH London
7B04EAEF3 · Nov 2
$63,643 AUD
£35,120 GBP
View
6 more retailers have this diamond
Prices start from $35,466 AUDSave up to $28,178 AUD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B+
3.12ct Round
$35,466 AUD